<!DOCTYPE html>
<html>

<head>
    <title></title>
    <style type="text/css">
        .notching {
            width: 160px;
            padding: 60px 20px;
        }

        .notching {
            background:
                linear-gradient(135deg, transparent 15px, deeppink 0) top left,
                linear-gradient(-135deg, transparent 15px, deeppink 0) top right,
                linear-gradient(-45deg, transparent 15px, deeppink 0) bottom right,
                linear-gradient(45deg, transparent 15px, deeppink 0) bottom left;
            background-size: 50% 50%;
            background-repeat: no-repeat;
        }
    </style>
</head>

<body>
    <div class="notching"></div>
</body>
<script>

</script>

</html>